I’m not completely sure but in a recent project I suddenly had red info errors that plugins where missing
You mean the red info errors that appear on the tracks?
Before or after starting monitoring?
Were the plugins insert or global plugins?
The plugin paths you say were identical after resolving the conflict by browsing, are they absolute paths or relative to the VST root folder?
Which Podium version? Release v1.08 introduced extended check on plugin availability.
Next time it happens, try reloading the project and see if that clears the errors.